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Three-dimensional ray tracing on Delaunay-based reconstructed surfaces

机译:基于Delaunay的重构曲面上的​​三维射线追踪

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摘要

A method of ray tracing for free-form optical surfaces has been developed. The ray tracing through such surfaces is based on Delaunay triangulation of the discrete data of the surface and is related to finite-element modeling. Some numerical examples of applications to analytical, noisy, and experimental free-form surfaces (in particular, a corneal topography map) are presented. Ray-tracing results (i.e., spot diagram root-mean-square error) with the new method are in agreement with those obtained using a modal fitting of the surface, for sampling densities higher than 40 X 40 elements. The method competes in flexibility, simplicity, and computing times with standard methods for surface fitting and ray tracing.
机译:已经开发出一种用于自由形式的光学表面的射线追踪方法。穿过此类曲面的光线跟踪基于曲面的离散数据的Delaunay三角剖分,并且与有限元建模有关。给出了一些应用到分析,嘈杂和实验性自由曲面(尤其是角膜地形图)的数值示例。对于高于40 X 40元素的采样密度,使用新方法进行的射线跟踪结果(即点图均方根误差)与使用表面模态拟合获得的结果一致。该方法在灵活性,简便性和计算时间方面与用于曲面拟合和光线追踪的标准方法竞争。

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